Singh Gaje, Panda Satyajit, Sapan Siddharth, Singh Jogender, Chandewar Pranay Rajendra, Biradar Ankush V, Shee Debaprasad, Bordoloi Ankur
Light and Stock Processing Division, CSIR-Indian Institute of Petroleum (IIP), Dehradun-248005, India.
Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India.
Nanoscale. 2024 Jul 25;16(29):14066-14080. doi: 10.1039/d4nr01185f.
Transforming CO to CO reverse water-gas shift (RWGS) reaction is widely regarded as a promising technique for improving the efficiency and economics of CO utilization processes. Moreover, it is also considered as a pathway towards e-fuels. Cu-oxide catalysts are widely explored for low-temperature RWGS reactions; nevertheless, they tend to deactivate significantly under applied reaction conditions due to the agglomeration of copper particles at elevated temperatures. Herein, we have synthesized homogeneously distributed Cu metallic nanoparticles supported on MoC for the RWGS reaction by a unique approach of carburization of metal-organic frameworks (MOFs) using a Cu-based MOF HKUST-1 encapsulating molybdenum-based polyoxometalates. The newly derived Na-Cu-MoC nanocomposite catalyst system exhibits excellent catalytic performance with a CO production rate of 3230.0 mmol g h with 100% CO selectivity. Even after 250 h of a stability test, the catalyst remained active with more than 80% of its initial activity.
将一氧化碳转化为二氧化碳的逆水煤气变换（RWGS）反应被广泛认为是一种提高一氧化碳利用过程效率和经济性的有前景的技术。此外，它也被视为通向电子燃料的一条途径。氧化铜催化剂被广泛用于低温RWGS反应；然而，由于铜颗粒在高温下的团聚，它们在实际反应条件下往往会显著失活。在此，我们通过一种独特的方法，即使用封装钼基多金属氧酸盐的铜基金属有机框架（MOF）HKUST-1对金属有机框架进行渗碳，合成了负载在碳化钼上的均匀分布的铜金属纳米颗粒用于RWGS反应。新得到的钠-铜-碳化钼纳米复合催化剂体系表现出优异的催化性能，一氧化碳产率为3230.0 mmol g⁻¹ h⁻¹，一氧化碳选择性为100%。即使经过250小时的稳定性测试，催化剂仍保持活性，其初始活性超过80%。
